Improvement in photographic varnishes



UNITED STATES PATENT QFFIon,

PATRICK H. DEAN," OF \VINQHESTER, INDIANA.

IMPROVEMENT IN PHOTOG'RAPHIC VARNISHES.

Specification forming part of Letters Patent No. 149,449, dated April7,1874; application filed February 25, 1874.

. To all whom it may concern:

Be it known that I, PATRICK H. DEAN, of Winchester, in the county ofRandolph and State of Indiana, have invented a certain Improved Compoundfor Varnishing Photo graphs, of which the following is a specificationmixed together, and heated in a suitable vessel to effect their intimateunion.

The varnish thus prepared is applied in a liquid state to the face of aphotograph by means of a swab or brush, and afterit has become dry, thephotograph is subjected to the action of a heated burnisher or likeinstrument, as usual.

albumen on the paper, gives a permanent gloss or polish to thephotograph.

I have found by actual tests that the varnish above described issuperior to any 110w in most general use, and doubt not that it will begenerally adopted by the profession when once known.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is

The herein-described compound for varnishing photographs, consisting ofa mixture of castile-soap, glycerine, alcohol, and liquid ammonia, inabout the proportions and prepared substantially in the mannerspecified.

In testimony whereof I -have signed my name to this specification in thepresence of two subscribing witnesses.

PATRICK H. DEAN.

Witnesses O. S. KEL EY, JNo. E. NEFF.

By this means the thin coat of varnish is excited, and, together withthe

